Pump



FIG. 1 is a perspective view of a pump as viewed from the front left side;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a perspective view of a pump as viewed from the rear right side.

The broken lines are included for the purpose of illustrating portions of the pump that form no part of the claimed design. 

CLAIM The ornamental design for a pump, as shown and described. 